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प्रश्न
State two conditions necessary for a circuit, such that electric current flows through it.
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उत्तर
For the flow of electric current through a circuit, following are the necessary conditions:
- Electric circuit must be closed or complete.
- Every part of the circuit is a conductor.
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संबंधित प्रश्न
(a) Complete the circuit given in Fig. by inserting between the terminals A and C. an ammeter.
(b) In the diagram, mark the polarity at the terminals of ammeter and indicate clearly the direction of flow of current in the circuit when the circuit is complete.
(c) Name and state the purpose of Rh in the circuit.
How is the resistance of a wire affected if its (a) length is doubled, (b) radius is doubled?
A cell of potential difference 12 V is connected to a bulb. The resistance of filament of bulb when it glows is 24Ω. Find the current drawn from the cell.
What do you understand by the term electric current?
Draw a diagram showing two bulbs connected in parallel to a dry cell.
State the kind of charge on a negative ion.
A bulb is connected to a cell. How is the resistance of circuit affected if another identical bulb is connected (i) in series, (ii) in parallel, with the first bulb?
